0.9.1-3ubuntu1 fails to build on armhf

chibi-scheme 0.9.1-3ubuntu1 (uploaded as fix for LP: #2009694) fails to build on armhf:

dpkg-gensymbols: warning: some new symbols appeared in the symbols file: see diff output below
dpkg-gensymbols: error: some symbols or patterns disappeared in the symbols file: see diff output below
dpkg-gensymbols: warning: debian/libchibi-scheme0/DEBIAN/symbols doesn't match completely debian/libchibi-scheme0.symbols
--- debian/libchibi-scheme0.symbols (libchibi-scheme0_0.9.1-3ubuntu1_armhf)
+++ dpkg-gensymbolsQAvlAq 2024-04-16 10:28:31.046898715 +0000
@@ -38,6 +38,8 @@
  sexp_bignum_sub@Base 0.8.0
  sexp_bignum_sub_digits@Base 0.8.0
  sexp_bignum_to_double@Base 0.8.0
+ sexp_bignum_to_sint@Base 0.9.1-3ubuntu1
+ sexp_bignum_to_uint@Base 0.9.1-3ubuntu1
  sexp_bignum_zerop@Base 0.8.0
  sexp_bootstrap_context@Base 0.8.0
  sexp_buffered_flush@Base 0.8.0
@@ -71,6 +73,7 @@
  sexp_complex_sub@Base 0.8.0
  sexp_complex_tan@Base 0.8.0
  sexp_cons_op@Base 0.8.0
+ sexp_context_align_pos@Base 0.9.1-3ubuntu1
  sexp_copy_bignum@Base 0.8.0
  sexp_copy_list_op@Base 0.8.0
  sexp_cos@Base 0.8.0
@@ -123,8 +126,8 @@
  sexp_free_heap@Base 0.8.0
  sexp_free_vars@Base 0.8.0
  sexp_gc@Base 0.8.0
- sexp_gc_heap_pack@Base 0.8.0
- sexp_gc_heap_walk@Base 0.8.0
+#MISSING: 0.9.1-3ubuntu1# sexp_gc_heap_pack@Base 0.8.0
+#MISSING: 0.9.1-3ubuntu1# sexp_gc_heap_walk@Base 0.8.0
  sexp_gc_init@Base 0.8.0
  sexp_generate@Base 0.8.0
  sexp_generate_op@Base 0.8.0
@@ -150,8 +153,8 @@
  sexp_list_to_uvector_op@Base 0.9.0
  sexp_list_to_vector_op@Base 0.8.0
  sexp_listp_op@Base 0.8.0
- sexp_load_image@Base 0.8.0
- sexp_load_image_err@Base 0.8.0
+#MISSING: 0.9.1-3ubuntu1# sexp_load_image@Base 0.8.0
+#MISSING: 0.9.1-3ubuntu1# sexp_load_image_err@Base 0.8.0
  sexp_load_module_file@Base 0.8.0
  sexp_load_module_file_op@Base 0.8.0
  sexp_load_op@Base 0.8.0
@@ -264,7 +267,7 @@
  sexp_rest_unused_p@Base 0.8.0
  sexp_reverse_op@Base 0.8.0
  sexp_round@Base 0.8.0
- sexp_save_image@Base 0.8.0
+#MISSING: 0.9.1-3ubuntu1# sexp_save_image@Base 0.8.0
  sexp_scheme_init@Base 0.8.0
  sexp_set_current_environment@Base 0.8.0
  sexp_set_parameter@Base 0.8.0

The issue is known upstream, but has no resolution at this time. Requesting removal of armhf binaries.